Offset printing process for realizing metallic effect

Abstract

The invention aims to provide an offset printing process for realizing a firm and attractive metallic effect. The process includes flows of a, forming a hose body of a plastic hose by squeezing; b, performing metal stamp processing for a printed surface required to display metallic texture on a hose wall of the plastic hose, namely attaching a metal stamp film on the hose wall; c, coating ultraviolet curing gloss oil on the surface of the metal stamp film to form an ultraviolet curing gloss coating; and d, printing offset printing ink on the ultraviolet curing gloss oil coating, enabling different colors of the printing ink to be distributed on the surface of the hose, and finally attaching offset printing gloss oil on the offset printing ink.

Description

technical field [0001] The invention relates to a printing process for product surface coating, in particular to a metal-effect Koch printing process. Background technique [0002] Printing on PE plastic products (such as plastic hoses) is difficult to achieve a metallic effect. The effect of screen printing on the bronzing surface is often very poor, and it is not possible to directly screen print on the bronzing surface. The reason is that the screen printing ink cannot be firmly attached to the bronzing surface, so the expected effect cannot be achieved. At present, there is a product in the market called: heat transfer, and its defect is that in the heat transfer process, due to the existence of the transfer boundary of the heat transfer film, the surface of the product has a feeling of a frame, so the printing of the metal effect cannot be achieved. Another process is screen printing after bronzing. Its defect: due to the thicker thickness of the screen printing ink an...

AI Technical Summary

Problems solved by technology

[0002] Printing on PE plastic products (such as plastic hoses) is difficult to achieve a metallic effect. The effect of screen printing on the bronzing surface is often very poor, and it is not possible to directly screen print on the bronzing surface. The reason is that the screen printing ink cannot be firmly attached to the bronzing surface, so the desired effect cannot be achieved

At present, there is a product called thermal transfer on the market. Its defect is that in the thermal transfer process, due to the existence of the transfer boundary of the thermal transfer film, the surface of the product has a feeling of a frame, so the printing of the metal effect cannot be achieved.

Another process is screen printing after bronzing. Its defect: due to the thicker thickness of the screen printing ink and fewer layers, it cannot express the effect of rich metal surface texture and multi-level color change, and the layering and color density of the printing effect. are weaker

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